Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
262 words
A liquid-filled type vibration damping stracture which comprises: a liquid-filled vibration isolator (1) having (a) first and second frames (4,5) to be mounted on a vibration source side such as power unit and on vehicle body side respectively; (b) a resilient member (7) provided between said first and second frames; (c) a diaphragm (10) secured at the first frame; (d) a baffle member (12) secured on the first frame and dividing the internal space surrounded by said resilient member, said diaphragm, and one of said frames into two liquid chambers (9,11), said baffle member further having an orifice portion (13) and aperture (17) being formed at said baffle member for communicating said two liquid chambers so as to damp a low frequency band vibration; -(-e) a movable plate (15) placed at the aperture (17) so as to damp a high frequency band vibration together with the vibration absorbing effect of said resilient member; and (f) at least one mass body (20) attached to the resilient member substantially parallel with said first and second frames; and a bracket member (2) for mounting said vibration isolator between said vibration source and said body at a predetermined angle of inclination against the direction of vibration from said vibration source, thereby substantially equalling the peak P of the residual frequency of a first vibration transmission characteristic A, which take place in conjunction with the liquid column resonance during the vibration of said movable plate, to a bottoming frequency of a second vibration transmission characteristic B in accordance with said angle of inclination and said mass body.
Claim 2
Dependent Claim
262 words
A liquid-filled type vibration damping stracture which comprises: a liquid-filled vibration isolator (1) having (a) first and second frames (4,5) to be mounted on a vibration source side such as power unit and on vehicle body side respectively; (b) a resilient member (7) provided between said first and second frames; (c) a diaphragm (10) secured at the first frame; (d) a baffle member (12) secured on the first frame and dividing the internal space surrounded by said resilient member, said diaphragm, and one of said frames into two liquid chambers (9,11), said baffle member further having an orifice portion (13) and aperture (17) being formed at said baffle member for communicating said two liquid chambers so as to damp a low frequency band vibration; -(-e) a movable plate (15) placed at the aperture (17) so as to damp a high frequency band vibration together with the vibration absorbing effect of said resilient member; and (f) at least one mass body (20) attached to the resilient member substantially parallel with said first and second frames; and a bracket member (2) for mounting said vibration isolator between said vibration source and said body at a predetermined angle of inclination against the direction of vibration from said vibration source, thereby substantially equalling the peak P of the residual frequency of a first vibration transmission characteristic A, which take place in conjunction with the liquid column resonance during the vibration of said movable plate, to a bottoming frequency of a second vibration transmission characteristic B in accordance with said angle of inclination and said mass body.
Claim 3
Dependent Claim
32 words
A liquid-filled type vibration damping structure as claimed in claim 1 wherein said predetermined angle of inclination of the vibration isolator against the direction of vibration from the vibration source is 45°.
Claim 4
Dependent Claim
47 words
A liquid-filled type vibration damping structure as claimed in claim 1 wherein the spring constant Kp of the resilient member in the direction of compression is selected such that it is much larger than the spring constant K 0 of the resilient member in the shearing direction.
Claim 5
Dependent Claim
21 words
A liquid-filled type vibration damping structure as claimed in claim 1 wherein said resilient member is formed in a ring shape.
Claim 6
Dependent Claim
32 words
A liquid-filled type vibration damping structure as claimed in claim 1 wherein said mass body is formed in a ring shape and is attached to the outer periphery of said resilient member.
Claim 7
Dependent Claim
29 words
A liquid-filled type vibration damping structure as claimed in claim 1 and claim 5 wherein the number of mass bodies to be attached to the resilient member is two.
Claim 8
Dependent Claim
26 words
A liquid-filled type vibration damping structure as claimed in claim 1 wherein said orifice portion together with the baffle member is formed in a ring shape.
Claim 9
Dependent Claim
50 words
A liquid-filled type vibration damping structure as claimed in claim 1 wherein at least one auxiliary plate (14) with an aperture (17a) is provided on one side of said baffle member, and wherein said movable plate is placed within an enclosure formed between said baffle member and the auxiliary plate.
Claim 10
Dependent Claim
36 words
A liquid-filled type vibration damping structure as claimed in claim 8 wherein the space into which said movable plate is placed has some gaps on both sides thereof so that the movable plate may be moved.
Claim 11
Dependent Claim
36 words
A liquid-filled type vibration damping structure as claimed in claim 1 wherein the diameter of each of said apertures is slightly smaller than the diameter of said movable plate so as not produce the orifice effect.
Claim 12
Dependent Claim
23 words
A liquid-filled type vibration damping structure as claimed in claim 1 wherein said baffle member is formed generally to have a trapezoidal cross-section.